package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @author: 青肆
 * @date: 2022/8/16 21:17
 * @description: EmployeeController
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    //员工登录
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        //4.密码对比，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals((password))) {
            return R.error("登录失败");
        }

        //5.查看员工状态，如果是禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id存入Session并返回登陆成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    //退出登录
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("登录成功");
    }

    //新增员工
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息： {}", employee.toString());
        //初始密码是123456，用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

       /* //创建时间
        employee.setCreateTime(LocalDateTime.now());
        //更新时间
        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setCreateUser(empId);

        //最后的更新人
        employee.setUpdateUser(empId);*/

        //添加员工
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    //员工分页查询
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page= {}, pageSize={}, name={}", page, pageSize, name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    //根据id修改员工状态 禁用/启用
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        Long empId = (Long) request.getSession().getAttribute("employee");
       /* employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);*/
        return R.success("员工信息修改成功");
    }

    //根据id查询员工信息
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到员工信息");
    }
}
